Athena

TECHNICAL FEATURES The YZ450F  engine was developed by Yamaha to make it more compact and lighter, as well as redesigning its configuration and compression ratio. To comply with these new characteristics, the Athena technicians have designed components of the highest quality and precision: ALUMINUM CYLINDER Compared to the Yamaha YZ 450 F bikes built before 2020, the Japanese motorbike manufacturer has designed the shape and inclination of the cylinder and oil passages. For this reason, the  Athena R&D team has studied and re-engineered the cylinder . Produced by  gravity casting  and sustained a rigorous  heat treatment to improve its mechanical characteristics,  the Athena cylinder ensures  maximum resistance  even at the highest temperatures. The liner is designed to ensure an  exceptionally smooth surface , which will last a lifetime, thanks to a special coating consisting of nickel and silicon carbides. FORGED PISTON WITH SELF-LUBRICATING AND ANTI-SEIZING COATING Designed by Athena engineers, which surpasses the original design, exceeding all bench tests, resulting in boosted performance and a higher compression ratio. The Athena piston ensures maximum power both at low/medium and high engine revs. Manufactured using reverse extrusion with cutting-edge technologies, this  forged piston  is treated with a  molybdenum disulfide  coating, which further  reduce   friction  while the flawless surface ensures an  ideal   flame distribution . The  rings  are produced  in Japan  with wear-resistant coatings to increase the retention and resistance, whereas the  piston pin  is made of high-quality  steel alloy  and is processed to obtain maximum hardness.